Win 7 won't recognize internal 2TB HDD after setting it up externally.

frankburnsjr · Sep 15, 2015

The only way I had to transfer everything from my old data drive (1TB) to my new data drive (2TB), was to use my SATA-to-USB cable. So, I hooked my new Samsung 2TB to my laptop via USB with the cable, formatted it (GUID) in disk management, and then copied all the data from the old drive to the new. That was yesterday. So, this morning, I go to switch the drives. Well, my laptop isn't recognizing the new drive (2TB). It doesn't show up in windows explorer or in disk management. I just thought about checking the BIOS, which I'll do right after I post this.

I replaced the old drive, hooked the new one back up with the SATA-USB cable, and it once again shows up. Luckily, I still have all my data on my old drive, so if I need to reformat, it's no biggie.

So, does anyone know what's going on? Did I make a mistake formatting it while it was hooked up via USB? I can't see how that would make any difference, but that's the only thing I can think of.

****EDIT****

This is an ASUS G73JH laptop running Windows 7 Home Premium 64-bit.

So, I checked the BIOS/UEFI, and here's what I found:

In the Boot section, this is what I see:

Boot
-----------
Boot Option Priorities
Boot Option #1 [P0: Samsung SSD 850 Pro 512 GB]
Boot Option #2 [P1: Slimtype BD E DS4E1S]

In the Save & Exit section, this is what I see:

Boot Selection Menu
----------------------------
P0: Samsung SSD 850 Pro 512 GB
P1: Slimtype BD E DS4E1S

So, it appears that the new 2TB drive is recognized by BIOS/UEFI, but it's just not being recognized by Win 7.

Anyway, I'm still confused about what's going on.

Calculagator · Sep 15, 2015

It looks like it's not being recognized by your bios-at least from what you have listed. Your Bios lists an SSD and a bluray drive. I would check for a loose connection.
Using USB to transfer/format a drive shouldn't have any effect on the drive showing up.

frankburnsjr · Sep 15, 2015

You're right, that is the Blu-Ray. Not sure why I didn't notice that.

There's not a loose connection. The drive gets screwed into a drive holder that then slides into place. The drive holder then gets screwed into place. It's the same process whether it's the new 2TB drive or the old 1TB drive. The old drive sows up, but the new one doesn't.

frankburnsjr · Sep 15, 2015

I don't know why this would make a difference, but I moved the drives from their original bay to the other's bay. Originally, the OS HDD was in the right bay, so when I cloned the OS to my SSD, that's where I put the SSD. The old data drive (1TB) was in the left bay, so I put the new data drive (2TB) in the left bay. That's what didn't work. Now, I have the SSD in the left bay and the data drive (2TB) in the right bay, and the 2TB drive now shows up.

Any idea why it wouldn't show up on the other SATA port?

Calculagator · Sep 15, 2015

frankburnsjr :

I'm not sure. It could be -if you completely cloned the drive- some sort of uuid collision where the drive it expected didn't quite match what was there.
If the new drive is slightly thicker than the old, it may not quite fit right.

frankburnsjr · Sep 15, 2015

The data drives are the exact same size. I didn't clone that one. Just copied files from the old one to the new. The drives are the exact same size. Measured them with my calipers. The SSD is obviously smaller than the original HDD, but that one worked just fine to begin with. Anyway, it works fine now.

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Win 7 won't recognize internal 2TB HDD after setting it up externally.

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